Fascial elastosis mimicking eosinophilic fasciitis

Area of Science:

• Dermatology
• Pathology
• Connective tissue diseases

Background:

• Eosinophilic fasciitis is characterized by skin induration and fascial inflammation.
• Accurate diagnosis relies on clinical presentation and histopathology.

Observation:

• A 75-year-old woman presented with symmetric skin induration and venous furrowing.
• Initial assessment suggested eosinophilic fasciitis based on clinical and routine histopathologic findings.

Findings:

• Elastic tissue staining revealed significant thickening of the fascia due to abnormal elastin fiber accumulation.
• This finding was distinct from the inflammatory process typically seen in eosinophilic fasciitis.
• The previously undescribed condition was termed fascial elastosis.

Implications:

• Fascial elastosis represents a novel finding in connective tissue disorders.
• This condition expands the differential diagnosis for patients with fascial thickening and induration.
• Further research is needed to understand the pathogenesis and clinical spectrum of fascial elastosis.